Year	Percent
1990	61.256
1991	61.519
1992	61.862
1993	62.275
1994	62.73
1995	63.199
1996	63.631
1997	64.043
1998	64.404
1999	64.682
2000	64.859
2001	64.902
2002	64.863
2003	64.76
2004	64.618
2005	64.45
2006	64.253
2007	64.033
2008	63.789
2009	63.602
2010	64.191
2011	67.679
2012	67.63
2013	67.053
2014	66.015
2015	64.054
2016	63.997
2017	64.311
2018	64.674
2019	65.089
2020	65.554
2021	66.065
2022	66.625
2023	67.216
2024	67.809
2025	68.384
2026	68.935
2027	69.46
2028	69.951
2029	70.403
2030	70.817